archive_read_set_options - Man Page
functions controlling options for reading archives
Library
Streaming Archive Library (libarchive, -larchive)
Synopsis
int
archive_read_set_filter_option
(struct archive *, const char *module, const char *option, const char *value);
int
archive_read_set_format_option
(struct archive *, const char *module, const char *option, const char *value);
int
archive_read_set_option
(struct archive *, const char *module, const char *option, const char *value);
int
archive_read_set_options
(struct archive *, const char *options);
Description
These functions provide a way for libarchive clients to configure specific read modules.
- archive_read_set_filter_option(), archive_read_set_format_option()
Specifies an option that will be passed to currently-registered filters (including decompression filters) or format readers.
If option and value are both
NULL
, these functions will do nothing andARCHIVE_OK
will be returned. If option isNULL
but value is not, these functions will do nothing andARCHIVE_FAILED
will be returned.If module is not
NULL
, option and value will be provided to the filter or reader named module. The return value will be that of the module. If there is no such module,ARCHIVE_FAILED
will be returned.If module is
NULL
, option and value will be provided to every registered module. If any module returnsARCHIVE_FATAL
, this value will be returned immediately. Otherwise,ARCHIVE_OK
will be returned if any module accepts the option, andARCHIVE_FAILED
in all other cases.- archive_read_set_option()
Calls
archive_read_set_format_option
(), thenarchive_read_set_filter_option
(). If either function returnsARCHIVE_FATAL
,ARCHIVE_FATAL
will be returned immediately. Otherwise, greater of the two values will be returned.- archive_read_set_options()
options is a comma-separated list of options. If options is
NULL
or empty,ARCHIVE_OK
will be returned immediately.Calls
archive_read_set_option
() with each option in turn. If anyarchive_read_set_option
() call returnsARCHIVE_FATAL
,ARCHIVE_FATAL
will be returned immediately.Individual options have one of the following forms:
- option=value
The option/value pair will be provided to every module. Modules that do not accept an option with this name will ignore it.
- option
The option will be provided to every module with a value of ā1ā.
- !option
The option will be provided to every module with a NULL value.
- module:option=value, module:option, module:!option
As above, but the corresponding option and value will be provided only to modules whose name matches module.
Options
- Format cab
- hdrcharset
The value is used as a character set name that will be used when translating file names.
- Format cpio
- compat-2x
Libarchive 2.x incorrectly encoded Unicode filenames on some platforms. This option mimics the libarchive 2.x filename handling so that such archives can be read correctly.
- hdrcharset
The value is used as a character set name that will be used when translating file names.
- pwb
When reading a binary CPIO archive, assume that it is in the original PWB cpio format, and handle file mode bits accordingly. The default is to assume v7 format.
- Format iso9660
- joliet
Support Joliet extensions. Defaults to enabled, use
!joliet
to disable.- rockridge
Support RockRidge extensions. Defaults to enabled, use
!rockridge
to disable.
- Format lha
- hdrcharset
The value is used as a character set name that will be used when translating file names.
- Format mtree
- checkfs
Allow reading information missing from the mtree from the file system. Disabled by default.
- Format rar
- hdrcharset
The value is used as a character set name that will be used when translating file names.
- Format tar
- compat-2x
Libarchive 2.x incorrectly encoded Unicode filenames on some platforms. This option mimics the libarchive 2.x filename handling so that such archives can be read correctly.
- hdrcharset
The value is used as a character set name that will be used when translating file names.
- mac-ext
Support Mac OS metadata extension that records data in special files beginning with a period and underscore. Defaults to enabled on Mac OS, disabled on other platforms. Use
!mac-ext
to disable.- read_concatenated_archives
Ignore zeroed blocks in the archive, which occurs when multiple tar archives have been concatenated together. Without this option, only the contents of the first concatenated archive would be read.
- Format zip
- compat-2x
Libarchive 2.x incorrectly encoded Unicode filenames on some platforms. This option mimics the libarchive 2.x filename handling so that such archives can be read correctly.
- hdrcharset
The value is used as a character set name that will be used when translating file names.
- ignorecrc32
Skip the CRC32 check. Mostly used for testing.
- mac-ext
Support Mac OS metadata extension that records data in special files beginning with a period and underscore. Defaults to enabled on Mac OS, disabled on other platforms. Use
!mac-ext
to disable.
Errors
Detailed error codes and textual descriptions are available from the archive_errno
() and archive_error_string
() functions.
See Also
tar(1), archive_read(3), archive_write_set_options(3), libarchive(3)
Referenced By
archive_read(3), archive_read_add_passphrase(3), archive_read_data(3), archive_read_extract(3), archive_read_format(3), archive_read_free(3), archive_read_header(3), archive_read_new(3), archive_read_open(3), archive_write_set_options(3), bsdtar(1), libarchive_changes(3).